Seiko Cal. 0731 - 386

This Spring Drive model from 1985 features a 37mm Hardlex-Coated Steel case. It features a Green dial protected by a Acrylic crystal and offers 170m of water resistance. [seikata-wm-7f9302b1d7da]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

13.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

170m

Dial Color

Green

Jewels

34j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1985

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